
.f{

    border: 1px solid black;
text-align: center;
}
.f3{
    display: flex;
    justify-content: center;
}
.f2{
    font-size: 15px;
    color: rgb(230,145,55);
    font-weight: bolder;
}
#container {
    overflow: hidden;
    width: 1100px;
    height: 800px;
    font-family: "微软雅黑";
    display: flex;
    justify-content: center;
    margin: 40px 0px;
}